CN108819896A - Airbag apparatus - Google Patents

Airbag apparatus Download PDF

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Publication number
CN108819896A
CN108819896A CN201810278775.3A CN201810278775A CN108819896A CN 108819896 A CN108819896 A CN 108819896A CN 201810278775 A CN201810278775 A CN 201810278775A CN 108819896 A CN108819896 A CN 108819896A
Authority
CN
China
Prior art keywords
inflator
flexible deformation
maintaining part
support portion
air bag
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201810278775.3A
Other languages
Chinese (zh)
Other versions
CN108819896B (en
Inventor
重村孝
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyoda Gosei Co Ltd
Original Assignee
Toyoda Gosei Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyoda Gosei Co Ltd filed Critical Toyoda Gosei Co Ltd
Publication of CN108819896A publication Critical patent/CN108819896A/en
Application granted granted Critical
Publication of CN108819896B publication Critical patent/CN108819896B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/205—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in dashboards
    • B60R21/206—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in dashboards in the lower part of dashboards, e.g. for protecting the knees
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/217—Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together
    • B60R21/2171—Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together specially adapted for elongated cylindrical or bottle-like inflators with a symmetry axis perpendicular to the main direction of bag deployment, e.g. extruded reaction canisters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/217—Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/261—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow with means other than bag structure to diffuse or guide inflation fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R2021/003—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks characterised by occupant or pedestian
    • B60R2021/0039—Body parts of the occupant or pedestrian affected by the accident
    • B60R2021/0051—Knees

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air Bags (AREA)

Abstract

Retainer has：The peripheral side of inflator can be covered and be kept by the substantially maintaining part of tubular；And installation unit in the state of making inflator be held in maintaining part, is installed on vehicle body side part, inflator and air bag is thus installed on vehicle body side part by installation unit from maintaining part to protrude setting with the approximately axially orthogonal mode of inflator.Maintaining part has in inner circumferential side：Flexible deformation support portion carries out flexible deformation in inflator insertion and can abut with the outer peripheral surface of inflator；And support protrusion portion, rigidity are set to higher than flexible deformation support portion, abut with the outer peripheral surface of inflator.

Description

Airbag apparatus
Technical field
The present invention relates to airbag apparatus, which is configured to have：Air bag, filling to air bag supply expansion gas Mechanism of qi, the retainer for inflator and air bag to be installed on to car body side.
Background technique
In the past, as airbag apparatus, as shown in Japanese Utility Model bulletin the 3039217th, there are following structures, that is, It is set as being inserted into inside from the opening of one end, in the retainer for the substantially tubular for keeping generally cylindrical inflator Maintaining part, formed to inner circumferential side protrude have rigidity support protrusion, abut the support protrusion with inflator, keeping Inflator is kept in the maintaining part of device.
But in existing airbag apparatus, it is configured to the axis orthogonal direction for making the support protrusion of retainer in inflator The opposite position in side is configured at 2 axial positions along inflator, is only propped up by the support protrusion inflator Support, if it is considered that being smoothly inserted into inflator, then can not increase the bulge quantity of support protrusion, in this case, make inflator Configuration is also difficult to ensure in the retention property that specified position is supported by support protrusion, from by the insertion operation of inflator Property, the retention property of inflator are set as good viewpoint and set out, and there are rooms for improvement.
Summary of the invention
The object of the present invention is to provide a kind of airbag apparatus, inflator can be made to be smoothly inserted into maintaining part, And inflator configuration can be made reliably to be kept in specified position by maintaining part.
The purpose of the present invention can be realized by the airbag apparatus of following structures.
A kind of airbag apparatus, consisting of has：Air bag；Inflator supplies expansion gas to air bag；And it keeps Device is used to inflator and air bag being installed on vehicle body side part,
Inflator is that outer shape is set as to generally cylindrical cylinder type,
Retainer is configured to have：The peripheral side of inflator can be covered and be protected by the substantially maintaining part of tubular It holds；And installation unit, from maintaining part to protrude setting with the approximately axially orthogonal mode of inflator, retainer is constituted For, in the state of making inflator be held in maintaining part, installation unit is installed on vehicle body side part, it is thus that inflator is gentle Capsule is installed on vehicle body side part,
Maintaining part has in inner circumferential side：Flexible deformation support portion, inflator insertion when carry out flexible deformation and can It is abutted with the outer peripheral surface of inflator；And support protrusion portion, rigidity be set to it is higher than flexible deformation support portion, with inflator Outer peripheral surface abuts,
Flexible deformation support portion and support protrusion portion are configured at can be in the inner circumferential side of maintaining part to being inserted into maintaining part The position that inflator is supported.
In airbag apparatus of the invention, when being inserted into inflator in the maintaining part of retainer, by making elastic change Shape support portion flexure, so as to be smoothly inserted into inflator to maintaining part, in addition, elasticity becomes after inflator insertion Shape support portion maintains the state of flexure, and abuts with the outer peripheral surface of inflator.In addition, will be rigidly set to than bullet in maintaining part Property deformable supports portion it is high, be also formed with the support protrusion portion abutted with the outer peripheral surface of inflator, therefore in inflator to maintaining part The flexible deformation support portion abutted after insertion by the outer peripheral surface with inflator and support protrusion portion, can be in maintaining part The specified position of side reliably support and inflation machine.
Therefore, in airbag apparatus of the invention, inflator can be made to be smoothly inserted into maintaining part, and passes through holding Portion and make inflator configuration reliably kept in specified position.
In addition, in airbag apparatus of the invention, if at least one in flexible deformation support portion or support protrusion portion Person is formed in along 2 axial positions of inflator, then can in 2 positions that axial side separates steadily support and inflation machine, The central axis for being able to suppress inflator is tilted relative to maintaining part, is able to maintain in maintaining part, is preferred.
Also, in the airbag apparatus of above structure, if flexible deformation support portion and support protrusion portion are formed in together At 3 positions that the peripheral side of inflator is in general radial, then it can become the position of general radial substantially uniformly The outer peripheral surface of inflator is supported, therefore in inflator insertion, can easily make axle center and the maintaining part of inflator Axle center (center that inflator is kept) unanimously, be preferred.
Also, in the airbag apparatus of above structure, if flexible deformation support portion and support protrusion portion are in inflator The position of axial side is substantially uniform and configures, then, can be by being configured at circumferentially at the axial position along inflator 3 positions flexible deformation support portion and support protrusion portion, the outer peripheral surface of inflator is propped up in such a way that 3 is point-supported Support, therefore more stably inflator can be kept, it is preferred.
Also, in the airbag apparatus of above structure, in the case where maintaining part is metal plate, if by maintaining part A part cutting bends and forms flexible deformation support portion, then when retainer manufactures, can also be formed simultaneously flexible deformation branch Support part can also inhibit the increase of components number, and inhibit to the increase of manufacturing cost, be preferred.
Also, in the case where being set as structure as described above, if maintaining part, which has, constitutes flexible deformation support portion Cutting is bent to form portion, and the flexible deformation support portion after the formation flexible deformation support portion for being bent to form cutting in portion Around the occlusion of opening position and constitutes, then be able to suppress the expansion gas from inflator ejection from flexible deformation support portion The position of surrounding is preferred to the flows outside of retainer.
Detailed description of the invention
Fig. 1 is the vehicle for indicating the use state of the air bag device for knee protection as an embodiment of the invention Outline longitudinal section view in the front-back direction.
Fig. 2 be the air bag device for knee protection of embodiment vehicle in the front-back direction outline amplification longitudinal section view.
Fig. 3 is the outline sectional elevation in the left and right vehicle wheel direction of the air bag device for knee protection of embodiment.
Fig. 4 be indicate the use state of the air bag device for knee protection of embodiment, from vehicle rear side Schematic front view.
Fig. 5 is the strabismus of the shell used in the air bag device for knee protection of embodiment from vehicle front side Figure.
Fig. 6 is the oblique of the retainer used in the air bag device for knee protection of embodiment from vehicle rear side View.
Fig. 7 is the front view of the retainer of Fig. 6 from vehicle rear side.
Fig. 8 is the top view of the retainer of Fig. 6.
Fig. 9 is the enlarged side view of the retainer of Fig. 6 from right.
Figure 10 is the partial enlarged view that the position of flexible deformation support portion is indicated in the retainer of Fig. 6.
Figure 11 is the cross-sectional view of the retainer of Fig. 6, corresponding with the position XI-XI of Fig. 7.
Figure 12 is the enlarged cross-sectional view of the retainer of Fig. 6, corresponding with the position XII-XII of Fig. 7.
Figure 13 is the enlarged cross-sectional view of the retainer of Fig. 6, corresponding with the position XIII-XIII of Fig. 7.
Figure 14 is the sectional elevation for indicating the state for the retainer for making inflator be inserted into Fig. 6.
Figure 15 is the cross-sectional view at position that indicate the state for the retainer for making inflator be inserted into Fig. 6, pressure contact portion.
Figure 16 be indicate the state for the retainer for making inflator be inserted into Fig. 6, flexible deformation support portion and support protrusion Cross-sectional view at the position in portion.
Figure 17 is the rearview of the air bag used in the air bag device for knee protection of embodiment.
Figure 18 is the enlarged cross-sectional view at the position XVIII-XVIII of the air bag of Figure 17.
Figure 19 is the partial enlargement rearview that the position of inserting opening is indicated in the air bag of Figure 17.
Figure 20 is the partial enlargement longitudinal section view that the position of mounting portion is indicated in the air bag of Figure 17.
Figure 21 is the top view that will constitute the state of substrate arrangement of the air bag of Figure 17.
Figure 22 is the top view that will constitute the state of remaining substrate arrangement of the air bag of Figure 17.
Figure 23 is the skeleton diagram for indicating the position of the inserting opening in the state of being inserted into retainer in air bag.
Figure 24 is to indicate that the outline of the near sites of the inserting opening in the state of being inserted into retainer in air bag cuts open View.
Figure 25 is the schematic sectional view for indicating the state for making inflator be inserted into retainer via inserting opening.
Figure 26 is to indicate the partial enlargement of state when air bag expansion in the air bag device for knee protection of embodiment Sectional elevation.
Figure 27 is to indicate the partial enlargement of state when air bag expansion in the air bag device for knee protection of embodiment Longitudinal section view.
Specific embodiment
In the following, being based on attached drawing, an embodiment of the invention is illustrated.In embodiments, as an example and Using the air bag device for knee protection protected for the knee K (KL, KR) to the driver D as occupant (in the following, saving Slightly " airbag apparatus ") it S and is illustrated.As shown in Fig. 1,4, the vehicle front side configured in driver D turns airbag apparatus S To the lower section of column 7.In addition, in this specification up and down, left and right and the direction of front and back be not particularly limited, and make airbag apparatus S The direction of the top to bottom, left and right, front and rear of vehicle when being equipped on vehicle is consistent.
Steering column 7 has as shown in Fig. 1,4：Column main body 8, the column cover 11 for covering the peripheral side of column main body 8.Column main body 8 As shown in Figure 1, being constituted by main shaft 9, by the column tube 10 covered around main shaft 9.
Airbag apparatus S is as shown in Figures 1 to 3, is configured to have：The air bag 90 of folding；Inflator 40 is supplied to air bag 90 Gas is used in expansion；As the shell 28 of vehicle body side part, the air bag 90 and inflator 40 of folding are accommodated；Retainer 55, it is used to inflator 40 and air bag 90 being installed on shell 28；And air cell covering 16, after the vehicle of the air bag 90 of folding Square side covering.
Air cell covering 16 is configured to be formed by the thermoplastic elastomer (TPE) (TPO) of polyolefins, can will be after the vehicle of shell 28 Square side covering.The air cell covering 16 as shown in figures 1-4, configure be made of top panel 12a and lower panel 12b instrument board (under Face saves slightly " instrument board ") below 12 the side plate 12b.Air cell covering 16 is configured to, and has：Door configuration section 17, configures in shell 28 protrusion is near opening 28a；And peripheral part 26, it extends to around a configuration section 17.
Door configuration section 17 has：Door portion 18, by the opening 28a covering of the protrusion of shell 28；Installation sheet portion 21,22, Extend from the two sides up and down in door portion 18 towards front, for air cell covering 16 to be installed on shell 28；And sidewall portion 23,24, Extend from the left and right sides in door portion 18 towards front.Door portion 18 becomes the vehicle rear side of the protrusion opening 28a of shell 28 The generally rectangular plate of covering.In embodiments, door portion 18 around by configuring the fracture reservations 19 of thin-walled and cutting with scissors Chain portion 20 and constitute, which becomes substantially H word shape from vehicle rear side, and the hinge part 20 is upper and lower Two end sides become rotation center when opening, and are set as the structure opened when opening to upper and lower two sides.Installation sheet portion 21,22 configures To be adjacent with the peripheral side of the upper wall portions 32 described below and lower wall portion 33 in shell 28 respectively, protruded to vehicle front side, In front end side, so that the stop hole of the opening oblong-shaped for engaging engagement pawl 32a, 33a formed in shell 28 Correspondingly side is respectively set multiple and configures in left and right directions with engagement pawl 32a, 33a by 21a, 22a.Sidewall portion 23,24 configures It is convex to vehicle front side to be adjacent with the inner circumferential side of the left wall 34L described below and right wall portion 34R in shell 28 respectively Out.
Peripheral part 26 in air cell covering 16 is configured in the periphery of door configuration section 17 throughout complete cycle, the embodiment the case where Under, be formed as side being below set as substantially coplanar with door portion 18, extend outward from door portion 18 (referring to Fig. 2,3).
Shell 28 is set as metal plate system, therefore as shown in Fig. 2,3,5, in the case where embodiment, has：Before vehicle The bottom wall part 29 of the substantially quadrilateral shape of square side configuration substantially extends along the longitudinal direction and rearward from the periphery of bottom wall part 29 The peripheral wall portion 31 of substantially four square tube shapes is set as using with the protrusion that air bag 90 can be made to protrude in the rear end side of peripheral wall portion 31 The substantially box shape of opening 28a.
Bottom wall part 29 is set as the generally rectangular plate of left and right wide cut, makes to be inserted into hole 29a, 29b configuration in left-right direction 2 positions, insertion hole 29a, the 29b be used for make retainer 55 configure as the bolt 85 of installation unit, in inflator The bolt 45 of 40 configurations is inserted through respectively.In embodiments, the bottom wall part 29 of the shell 28 is constituted gentle to inflator 40 The vehicle body side part that capsule 90 is installed.
Peripheral wall portion 31 has：The opposite upper wall portions 32 in side, lower wall portion 33, the in left and right directions opposite left side in side in above-below direction Wall portion 34L, right wall portion 34R.Near the rear end in upper wall portions 32, lower wall portion 33, for in the installation sheet portion of air cell covering 16 21, engagement pawl 32a, 33a that 22 stop hole 21a, 22a peripheries formed are engaged is protruded to upper and lower outside respectively, will The mode of front end towards vehicle front side is bent to section shape generally L-shaped and is formed.Each engagement pawl 32a, 33a is respectively in upper wall Portion 32, lower wall portion 33, side is respectively formed with multiple (being 5 in the case where embodiment) in left and right directions.
Left wall 34L and right wall portion 34R are set as symmetrical shape and constitute in the case where embodiment.Implementing In mode, the right wall portion 34R of 47 side of the connector configuration in the main part 41 of inflator 40 is used as an example, in detail It is illustrated.
Right wall portion 34R makes protrusion opening so that 29 side of bottom wall part (front end side) is located at the inside (left) of left and right directions The side 28a (rear end side) be located at left and right directions outside (mode of right, have step and constitute.Moreover, in right wall portion 34R, In the state that the main part 41 of inflator 40 is installed on shell 28, it is set as capable of connecting the connector that exposes of oral area 43 with opening Mouth 35R is open from left and right directions side as substantially rectangular shape and is formed, and enables to connector 47 being connected to connection Oral area 43 (referring to Fig. 5).
In addition, in the shell 28 of embodiment, as shown in Fig. 3,5, in the rear side of left wall 34L, right wall portion 34R, Installation sheet portion 37L, 37R are formed in such a way that the outside towards left and right extends respectively.37L, 37R are to be used in these installation sheet portions Shell 28 is installed on to the position of 1 side of vehicle body of vehicle.These installation sheet portions 37L, 37R are configured in vehicle loading in instrument The front side of plate 12b below in plate 12 is configured to and the support from the extension of the reinforcement of instrument panel 2 of 1 side of vehicle body as shown in Figure 3,4 Frame 4 links.
Inflator 40 is in the case where embodiment, as shown in figure 3, being configured to have：Generally cylindrical main part 41, In the bolt 45 that the side right end 41b (base portion side) of main part 41 is protruded from main part 41.Main part 41, which is used as, makes approximately axially edge Left and right directions configuration substantially cylindric and constitutes, in the case where embodiment, in the left end side 41a (front end side) configured with energy Enough gas blowing units 42 for spraying expansion gas.In gas blowing unit 42, the gas that can spray expansion gas sprays 42a is exported along the circumferential with radial and axially configuring with multiple row (referring to Fig. 3) along main part 41 of main part 41.In main body Right end 41b (base portion) side in portion 41 is formed with connection oral area 43, and the connection oral area 43 is for making to working signal input The connector 47 that lead 48 has carried out wiring is attached (referring to Fig. 3).Bolt 45 in the side right end 41b of main part 41, with The approximately axially orthogonal mode of main part 41 is protruded from main part 41, if be described in detail, in embodiment In the case of, in the side right end 41b of main part 41, from the end face of right end 41b, configuring is becoming the length dimension of main part 41 1/5 or so position.
Retainer 55 is configured to have：The substantially maintaining part 56 of tubular, can by the peripheral side of inflator 40 cover and It keeps；As the bolt 85 of installation unit, set from maintaining part 56 to be protruded with the approximately axially orthogonal mode of inflator 40 It sets；Accommodating recess 78 is accommodated to from the bolt 45 of the main part 41 of inflator 40 protrusion setting；And pressure contact portion 82, It is crimped in vehicle loading with the peripheral side of main part 41.In embodiments, the portion other than the bolt 85 in retainer 55 Part (maintaining part 56, the extended portion 77 described below for constituting accommodating recess 78, pressure contact portion 82), integrally by sheet metal It is formed.
Maintaining part 56 can cover the peripheral side of the main part 41 of inflator 40, so that approximately axially side in left-right direction Mode be set as making substantially four square tube shapes of left and right ends side opening.Maintaining part 56 has：Bottom wall part 57, is configured to substantially Along the bottom wall part 29 of shell 28；Upper wall portions 65 extend from the upper limb side of bottom wall part 57 to rear, the upside of main part 41 are covered Lid；Lower wall portion 66 rearward extends from the lower edge side of bottom wall part 57, and the downside of main part 41 is covered；And rear wall parts 67, It covers the rear of main part 41 in a manner of by the connection of the rear end of upper wall portions 65, lower wall portion 66.Rear wall parts 67 in detail, It is set as following structures, that is, the inclined incline upward portion in such a way that diagonal section carries out rounded corner is respectively configured in the upper side and lower side 67a and lower inclined portion 67b.In addition, the maintaining part 56 is configured to be flowed out with gas with opening 56b, 56c, gas outflow The expansion sprayed from the gas blowing unit 42 in the main part 41 of inflator 40 can be flowed out to gas with opening 56b, 56c In air bag 90.The outflow of each gas with opening 56b, 56c maintaining part 56 left end side, to by the gas blowing unit 42 of inflator 40 Rear covering region (regions of rear wall parts 67) cut off and constituted.In addition, in the maintaining part 56, the side right end 56a Opening constitute inserting opening 56d, inserting opening 56d make the main part 41 of inflator 40 from 42 side of gas blowing unit insert Enter to inside.
In a manner of bottom wall part 29 of the bottom wall part 57 using substantially edge as the shell 28 of vehicle body side part, as in left-right direction Strip tabular and constitute (referring to Fig. 2,3).In embodiments, the component other than the bolt 85 in retainer 55 The sheet metal of regulation shape is passed through punching press by (maintaining part 56, the extended portion 77 for constituting accommodating recess 78, pressure contact portion 82) Processing etc. and be shaped to regulation shape, and in the region of bottom wall part 57, two important place of ora terminalis of sheet metal is superimposed, passes through benefit It is combined with riveting etc., to be integrally formed.That is, bottom wall part 57 is set as the two panels of outside left 57a and inside line 57b It is superimposed shape (referring to Fig.1 1,13).
It is formed with flexible deformation support portion 58 in bottom wall part 57, main part of the flexible deformation support portion 58 in inflator 40 Flexible deformation is carried out when 41 insertion and can be abutted with the outer peripheral surface 41c of main part 41.Flexible deformation support portion 58 is as substantially In left-right direction band-like, be configured to make the right side as direction of insertion side of main part 41 as base portion and with 57 side of bottom wall part It is connected, front end 58c is made to separate (referring to Fig.1 0,11) from bottom wall part 57.In detail, such as Figure 11 institute of flexible deformation support portion 58 Show, until left side, is tilted in a manner of to the inner circumferential side of maintaining part 56 (rear side when vehicle loading) protrusion, and so that The front end 58c isolated from bottom wall part 57 is bent into generally ' j ' word shape in section view and is formed towards the mode in front.That is, bullet Property deformable supports portion 58 be configured between the rake 58a and front end 58c of base portion side, configure to be protruded towards inner circumferential side Mode is bent into the support portion main body 58b of substantially arc-shaped, when main part 41 is inserted into, is set as following structures, that is, with by base portion The mode of the position flexure of the rake 58a of side, makes the support portion main body 58b abut (reference with the outer peripheral surface 41c of main part 41 Figure 14).
In the case where embodiment, which is cutting the inside line 57b in bottom wall part 57 The portion of being bent to form 60 (0 double dot dash line referring to Fig.1) is cut locally to cut off and formed.In the bullet that cutting is bent to form in portion 60 Property deformable supports portion 58 formed after, the opening position 61 for cutting off and being formed inside line 57b is formed in flexible deformation support portion Around 58, the opening position 61 is by being made of a part of the outside left 57a configured in the outside of inside line 57b Cladding parts 62 are blocked (referring to Fig.1 0,11,13) in whole region.
In addition, the bulge quantity relative to bottom wall part 57 of the support portion main body 58b in the flexible deformation support portion 58 is set For following sizes, that is, when the main part 41 for making inflator 40 is inserted into, the position near the base portion in rake 58a can be made Flexible deformation (flexure), and support portion main body 58b is made to abut (referring to Fig.1 4) with the outer peripheral surface 41c of main part 41.In detail, The bulge quantity of support portion main body 58b is set as, and when main part 41 is inserted into maintaining part 56, keeps the support described below convex Rise portion 70 front end 70a, support portion main body 58b abutted with the outer peripheral surface 41c of main part 41 in the state of, be able to maintain that rake The state of the flexure of 58a inhibits main part 41 along axial movement relative to maintaining part 56 and is carried out to main part 41 It keeps.The front end 58c of the flexible deformation support portion 58 is configured to, it can be ensured that makes the outer of support portion main body 58b and main part 41 Elastic deformation amount (referring to Fig.1 4) when circumferential surface 41c is abutted has gap between outside left 57a (cladding parts 62) (referring to Fig.1 1).
Also, the flexible deformation support portion 58 has until from the insertion for being inserted into the main part 41 of inflator 40 with opening Increase the inclined rake of mode to the bulge quantity of inner circumferential side until the left side that mouth 56d (the right end 56a of maintaining part 56) is separated 58a, therefore into maintaining part 56, when being inserted into the main part 41 of inflator 40 from the inserting opening 56d on right side, by this The mode that rake 58a is guided can be such that the main part 41 of inflator 40 is smoothly inserted into maintaining part 56.
The flexible deformation support portion 58 and the abutting part 69 (support protrusion portion 70) described below formed in maintaining part 56 Co-operating is kept for the main part 41 to the inflator 40 being inserted into the state of retainer 55, in embodiment In the case where, in vehicle loading, for the flexible deformation support portion 58, make left and right directions side (the axial side of inflator 40) Position and abutting part 69 (support protrusion portion 70) are substantially uniform, and are formed in front-rear direction side and 69 (support protrusion of abutting part Portion 70) opposite position (referring to Fig. 7,11,13).In addition, in the case where embodiment, flexible deformation support portion 58L, 58R As shown in Fig. 7,11, in the region for being in right side compared with the center of the left and right directions in bottom wall part 57, side in left and right directions Configuration is at 2 positions.In detail, the flexible deformation support portion 58R on right side is configured, the right end 56a in maintaining part 56 is configured Nearby (near inserting opening 56d), in other words, approaches and configure with the left side of pressure contact portion 82.
Rear wall parts 67 in maintaining part 56, are formed with when the main part 41 in inflator 40 is inserted into maintaining part 56 and master The abutting part 69 that the outer peripheral surface 41c in body portion 41 is abutted.Abutting part 69L, 69R are in the case where embodiment, such as the institute of Fig. 6,7,11 Show, so that the position of left and right directions side (the axial side of inflator 40) and flexible deformation support portion 58L, 58R substantially uniform side Formula, side is formed in 2 positions in left and right directions.In addition, the abutting part 69L, 69R are formed in front-rear direction side and flexible deformation Support portion 58L, 58R opposite position (referring to Fig.1 1,13).That is, abutting part 69L, 69R and flexible deformation support portion 58L, 58R It is configured in the consistent position of peripheral side of the main part 41 of the inflator 40 kept.Each abutting part 69L, 69R such as Figure 13 It is shown, it is configured in section along the longitudinal direction, there is side in above-below direction, that is, 2 of the peripheral side separation of main part 41 2 support protrusion portions 70,70 of position configuration.Each support protrusion portion 70 so that the incline upward portion 67a in rear wall parts 67 area Domain and the region of lower inclined portion 67b are respectively facing the side of inner circumferential side 41 side of main part of inflator 40 (and front side) recess Formula is protruded to 41 side of main part and is formed.Each support protrusion portion 70 is configured to make the front end side the 70a general curved circular arc of recess Shape, will rigidly be set to higher than flexible deformation support portion 58, be set as abutting front end 70a with the outer peripheral surface 41c of main part 41 Structure.That is, in embodiments, 58,2 support protrusion portions 70,70 of flexible deformation support portion are configured in inflator 40 Main part 41 peripheral side it is consistent, and the axle center of the main part 41 in inflator 40 be in general radial.
In addition, the position between abutting part 69L, 69R is formed with crimping opening portion 72 in maintaining part 56, the crimping With opening portion 72 when air bag 90 expands, keep the baffle component 110 described below directly outer with the main part 41 of inflator 40 Circumferential surface 41c crimping can seal the periphery of the inserting opening 94 described below in air bag 90 (referring to Figure 26,27).It should Crimping uses opening portion 72 that specifically as shown in Fig. 6~8,11, maintaining part 56 is arrived from upper wall portions 65 via rear wall parts 67 The mode significantly cut off until lower wall portion 66 is formed, and the opening width of left and right directions side is dimensioned to following sizes, that is, When air bag 90 expands, configure the ora terminalis (left border 110c) of baffle component 110 as free end, in expansion gas G Pressure effect when, make it possible to the size directly crimped with the outer peripheral surface 41c of main part 41.
In addition, being formed with locking claw in the side right end 56a for the periphery for constituting inserting opening 56d in maintaining part 56 74, which is configured in the state of being contained in retainer 55 in air bag 90 and to fold air bag 90 from air bag 90 inserting opening 94 protrudes.Locking claw 74 is formed in (to be divided along the circumferential of maintaining part 56 in the peripheral side of main part 41 From) 2 positions, it is respectively formed as extending from the ora terminalis of incline upward portion 67a, lower inclined portion 67b and rearward protruding (ginseng According to Fig. 9).That is, locking claw 74 is formed in the region from the isolated rear side of bottom wall part 57 in maintaining part 56.In detail, block Claw stop portion 74 is formed in the peripheral side of inflator 40 (maintaining part 56) with the approximate diameter ruler of the main part 41 in inflator 40 2 positions of very little amount separation.That is, engaging the mutual separation distance H1 (referring to Fig. 9) of claw 74 is set as straight with main part 41 Diameter dimension D 1 (referring to Fig.1 4) is roughly the same.In the airbag apparatus S of embodiment, in assembling operation, it is configured to protect Holder 55 is contained in after the folding of air bag 90 in the state of inside, is inserted into the main part 41 of inflator 40 from inserting opening 94 It is inserted into maintaining part 56 to air bag 90, and via the inserting opening 56d of retainer 55, these locking claws 74,74 The purpose of configuration is, makes the inserting opening 94 of air bag 90 and position (the insertion center of the inserting opening 56d of retainer 55 C2, C3 are mutual, referring to Fig. 9,19,23) unanimously, be smoothly inserted into the main part 41 of inflator 40 to the maintaining part of retainer 55 In 56.
The bolt 85 for being provided as installation unit is protruded from maintaining part 56, is formed in bottom wall part 57 and left and right directions Center compare in left side region, that is, the side region isolated with flexible deformation support portion 58 in left and right directions, if in detail Ground is illustrated, then from left end 1/4 or so position of the configuration in bottom wall part 57.The bolt 85 is with the master with inflator 40 Approximately axially orthogonal mode (in other words, in the mode substantially orthogonal relative to main part 41) in body portion 41, with bottom wall part 57 it is substantially orthogonal and from bottom wall part 57 protrude be arranged.
To the accommodating recess 78 accommodated from the bolt 45 of the protrusion setting of inflator 40, configured on the right side of maintaining part 56 The extension being formed continuously from bottom wall part 57 is formed in a manner of protruding from maintaining part 56 in the side right end 57c of bottom wall part 57 The position of setting unit 77.Accommodating recess 78 has：Recess portion main body 79 is formed as keeping extended portion 77 recessed from the side right border 77a It falls into；And peripheral part 80, constitute the periphery of recess portion main body 79.Extended portion 77 is as substantially along the bottom wall part of shell 28 29 configuration tabulars and constitute.That is, extended portion 77 is shaped generally as the bottom wall part 57 along maintaining part 56.Recess portion main body 79 It is configured to fashionable to 56 interpolation of maintaining part in main part 41, the bolt 45 protruded from the main part 41 of inflator 40 can be inserted Enter, in such a way that the side right border 77a forms opening 79a, the excision of extended portion 77 to be formed for channel-shaped in left-right direction (referring to Fig. 7).The recess portion main body 79 opening width of front-rear direction side is dimensioned to it is more slightly larger than the outer diameter of bolt 45, It is configured to be inserted through for bolt 45.In the case where embodiment, insertion operation of the recess portion main body 79 as bolt 45 When guide portion, be configured to will become opening the side 79a right end side region to ora terminalis until expand.In the main body of inflator 40 When portion 41 is inserted into the maintaining part 56 of retainer 55, if making the bolt 45 protruded from the main part 41 of inflator 40 from opening 79a is inserted into the recess portion main body 79, then bolt 45 is drawn by the peripheral part 80 (upper limb 80b, lower edge 80c) of recess portion main body 79 It leads, and keeps protrusion direction roughly the same with from the protrusion direction of bolt 85 of the protrusion setting of bottom wall part 57 and configure (referring to figure 14).Moreover, in the state of being inserted into recess portion main body 79 in a manner of being abutted by the left border 80a with peripheral part 80, bolt 45 It will be configured to relative to the direction of the bolt 85 formed in retainer 55, separation distance, it can be with bolt 85 simultaneously and successfully It is inserted into insertion hole 29a, 29b in the formation of bottom wall part 29 of shell 28.
The configuration of pressure contact portion 82 crimped in vehicle loading with the peripheral side of main part 41 is in bottom wall part 57 and configured with receipts Between the extended portion 77 for holding recess portion 78.That is, the configuration of pressure contact portion 82 is in the bolt 85 from the protrusion setting of bottom wall part 57 and accommodates The position near accommodating recess 78 between recess portion 78.The pressure contact portion 82 is configured to when bolt 45 is installed to bottom wall part 29, energy It is enough to be crimped with the outer peripheral surface of 57 side of bottom wall part in main part 41.Specifically, pressure contact portion 82 can continuously in a circumferential with master The region contact of front side when vehicle loading in the outer peripheral surface 41c in body portion 41, the slave left and right directions side in vehicle loading are seen In the state of examining, be formed as relative to the upward lower extension (referring to Fig.1 5) of the bolt 45 protruded from main part 41.Pressure contact portion 82 has Say to body, it, can be to substantially 1/4 or so region circumferentially about the region of the front side in the outer peripheral surface 41c of main part 41 It is crimped, be bent the outer shape from left and right directions side smoothly and constituted.In addition, the pressure contact portion 82 such as Figure 11 institute Show, main part 41 (maintaining part 56) is formed as protruding from the smooth lifting of bottom wall part 57 along axial section shape.It should The bulge quantity from bottom wall part 57 of pressure contact portion 82 is as shown in figure 11, before being set as than being inserted into the main part 41 of inflator 40 The bulge quantity from bottom wall part 57 of flexible deformation support portion 58 under state is small, in the elasticity for being inserted into main part 41 When the deformation in deformable supports portion 58, front end 82a is made to contact (referring to Fig.1 4) with the outer peripheral surface 41c of the main part 41 of inflator 40. If be described in detail, in embodiments, pressure contact portion 82 makes the section shape of the front-rear direction side at the position of front end 82a Shape is smoothly bent and is formed, but is not set as substantially arc-shaped (referring to Fig.1 2), accommodates by the main part 41 of inflator 40 In the state of the inside of maintaining part 56, when fastening nut 86 with the bolt 45 protruded from the bottom wall part 29 of shell 28, pressure The main part 41 that socket part 82 is inflated machine 40 presses, and becomes following forms, that is, with by upper and lower ora terminalis 82b, 82b of front end 82a The mode that side reciprocally presses extension deforms (referring to Fig.1 5).Moreover, pressure contact portion 82 makes in the state of being contained in shell 28 Front end 82a is continuously supported with the outer peripheral surface 41c of main part 41 in the range of the circumferential substantially the entire area throughout inflator 40 It connects.That is, pressure contact portion 82 is under vehicle loading state, so that range and main body of the front end 82a in substantially the entire area circumferentially The mode that the outer peripheral surface 41c of 57 side of bottom wall part (front side) in portion 41 is continuously abutted, is crimped on outer peripheral surface 41c.The crimping Portion 82 is adjacent to be formed with the inserting opening 56d in maintaining part 56, in other words, is contained in retainer 55 in air bag 90 In the state of portion, as shown in figure 25, the position in the outside of air bag 90 is configured near the inserting opening 94 of air bag 90 and become It sets.The pressure contact portion 82 is in vehicle loading, as shown in figure 15, be configured to so that front end 82a circumferentially and continuously with outer peripheral surface The mode that 41c is abutted, crimps the outer peripheral surface 41c of main part 41, therefore can flow to towards 94 side of inserting opening The flowing of expansion gas limited.Therefore, as shown in figure 25, can be reliably prevented by pressure contact portion 82 in bottom wall part The expansion that gap between 57 and main part 41 is flowed through is flowed with gas G further towards 45 side of bolt, even inflator 40 Region to make 45 side of bolt in main part 41 is equipped on the structure of vehicle in a manner of protruding to outside air bag 90, be also able to suppress It is leaked to external gas, expands air bag 90 promptly.
Moreover, in the retainer 55 of embodiment, as described above, flexible deformation support portion 58 and 2 support protrusion portion 70,70 peripheral sides for being configured in inflator 40 (main part 41) essentially become radial 3 positions, by inflator 40 In the state that main part 41 is contained in maintaining part 56, the outer peripheral surface 41c of main part 41 passes through the branch of flexible deformation support portion 58 Support part main body 58b, support protrusion portion 70,70 front end 70a, 70a, 3 points separated in the circumferential are supported (referring to Fig.1 6). Therefore, when inflator 40 is inserted into, the axle center of axle center C1 (referring to Fig.1 5) and maintaining part 56 of main part 41 can easily be made (the insertion center C2 of inserting opening 56d, it is consistent referring to Fig. 9).Moreover, in embodiments, flexible deformation support portion 58L, 58R and abutting part 69,69R are configured at 2 positions of side (the axial side of main part 41) separation in left and right directions, therefore institute as above The support stated is that 2 positions of side (the axial side of main part 41) separation in left and right directions carry out.Therefore, it can prevent from inflating The main part 41 of machine 40 is so that central axis X1 (referring to Fig.1 4) is inclined relative to the central axis X2 (referring to Fig.1 1) of maintaining part 56 Mode is inserted into.In addition, flexible deformation support portion 58L, 58R are supported main part 41 in the state of flexible deformation, Therefore main part 41 is temporarily held in the state of to being limited along axial movement in maintaining part 56.Therefore, it will only fill The main part 41 of mechanism of qi 40 is contained in maintaining part 56 from inserting opening 56d, until making in bolt 45 and peripheral part 80 It is inserted into recess portion main body 79 until left border 80a is abutted, so as to pass through the support portion master of flexible deformation support portion 58L, 58R The front end 70a in each support protrusion portion 70 in body 58b, abutting part 69L, 69R is supported the outer peripheral surface 41c of main part 41, Can the main part 41 to inflator 40 inhibit relative to the movement of maintaining part 56, temporarily hold in maintaining part 56.In addition, Even if being only inserted into the recess portion main body 79 of channel-shaped in left-right direction in a manner of making right end side opening, it is also able to suppress bolt 45 It is moved in recess portion main body 79, can be easily implemented positioning of the bolt 45 relative to the bolt 85 of retainer 55.
Moreover, being configured to make the main part 41 of inflator 40 to be contained in air bag 90 in the airbag apparatus S of embodiment The maintaining part 56 of the retainer 55 of interior configuration makes bolt 85, the inflation of retainer 55 when being contained in air bag 90 in shell 28 The bolt 45 of machine 40 is protruded from the bottom wall part 29 of shell 28, so that nut 86 is anchored on each bolt 45,85, thus by 40 He of inflator Air bag 90 is installed on the bottom wall part 29 for constituting the shell 28 of vehicle body side part.In addition, in the fastening of the nut 86, inflator 40 Main part 41 supported by the pressure contact portion 82 by being configured near bolt 45, thus to central axis relative to maintaining part 56 Inclination (offset of axis orthogonal direction side) limited in the state of, be held in retainer 55, be installed on shell 28.
Air bag 90 is in the case where embodiment, as shown in Figure 17,18,20, has air bag main body 91, in air bag main body 91 The baffle component 110 of interior configuration, the frenulum 120,121 configured in air bag main body 91 and constitute.
Shown in double dot dash line and Figure 17 of the shape such as Fig. 4 when air bag main body 91 completes expansion, it is set as generally rectangular Plate is configured to protect the knee K (KL, KR) of the left and right of driver D.Air bag main body 91 as shown in figure 17, will Outer shape is set as roughly the same, by expand complete when 7 side of steering column configuration car body sidewall portion 91a, expansion complete When driver side configuration occupant's sidewall portion 91b periphery be combined with each other and become it is bag-shaped.In addition, air bag main body 91 such as Figure 17 It is shown, have：Mounting portion 92 is configured when expanding and completing in 28 side of shell；And protection bulge 102, with mounting portion 92 protect the knee K (KL, KR) of the left and right of driver D when expanding and completing compared to widening to the left and right.
The region of mounting portion 92 in car body sidewall portion 91a is formed with as shown in Figure 17,19 for making inflator 40 Main part 41 be inserted into inserting opening 94, the mounting hole 93 for protruding the bolt 85 of retainer 55.Inserting opening 94 are formed in the right end side of mounting portion 92, and mounting hole 93 is formed in the left side of inserting opening 94.In the case where embodiment, Mounting hole 93 is formed in compared with the center of the left and right of air bag main body 91 position on slightly right side.
Inserting opening 94 forms the slit 95 of multiple threadiness in car body sidewall portion 91a, thus as opening forming part It is configured to be inserted into for the main part 41 of inflator 40.In the case where embodiment, such as Figure 19 of inserting opening 94 is detailed It is shown, it is configured to the perforation of the round with the insertion center C3 being inserted into the main part 41 for making inflator 40 path formed Hole 94a, the multiple slits 95 extended from through hole 94a.Slit 95 is configured to have 2 lockings in the case where embodiment With slit 96,96,1 articles of auxiliary slits, 97,2 article of the 2nd auxiliary slit 98,98.In addition, in embodiments, slit 95 is formed as, Front and back (upper and lower when vehicle loading) in the state that air bag main body 91 is flatly unfolded becomes substantially symmetric shape.
2 lockings with slit 96,96 in the state that air bag main body 91 is flatly unfolded, from through hole 94a (in insertion Heart C3) extend to the right, and two sides expand and obliquely configure forwards, backwards in the mode that keeps terminal 96a, 96a mutually separated.That is, Locking, at the position of through hole 94a, is formed as reciprocally intersecting, and in the region on the right side of through hole 94a, phase with slit 96 It configures adjacently.In addition, each locking is fashionable to 90 interpolation of air bag in retainer 55 with slit 96, it is respectively structured as making from terminal 96a Engage the protrusion of claw 74 (referring to Figure 23).That is, the separation distance H2 (reference that terminal 96a, 96a of locking slit 96,96 is mutual Figure 19), the separation distance H1 between locking claw 74,74 is equal, is set as the diameter ruler with the main part 41 in inflator 40 Very little D1 is roughly the same.In addition, the intersecting angle θ (referring to Fig.1 9) of locking slit 96,96 is set in the case where embodiment It is 80 ° or so.Locking under vehicle loading state, is rearward extended with slit 96,96 from through hole 94a, and to upper and lower two sides It expands and obliquely configures.
Assist slit 97 in the state that air bag main body 91 is flatly unfolded, as shown in figure 19, by terminal 97a from card The isolated mode of slit 96,96 is only used, is formed as extending to the left from through hole 94a (insertion center C3).In embodiment In the case of, auxiliary slit 97 is constituted as substantially in left-right direction linear.Assist slit 97 by length dimension L1 (reference Figure 19) it is set as 1/2 or so of the diameter dimension D1 of main part 41.The auxiliary slit 97 is under vehicle loading state, with direction 29 side of bottom wall part of shell 28, the mode extended forwards from through hole 94a substantially configure along the longitudinal direction.2nd auxiliary is narrow Seam 98,98 is formed as substantially orthogonal with auxiliary slit 97, and extends from through hole 94a to two sides, air bag main body 91 is flat In the state of ground expansion, as shown in figure 19, be formed as extending forwards, backwards from through hole 94a (insertion center C3).In embodiment In the case where, each 2nd auxiliary slit 98 is constituted as substantially along the longitudinal direction linear.2nd auxiliary slit 98,98 will Length dimension L2 (referring to Fig.1 9) is set as roughly the same with the auxiliary length dimension L1 of slit 97, is set as the diameter of main part 41 1/2 or so of dimension D 1.That is, in embodiments, each 2nd auxiliary slit 98 is configured to, terminal 98a is configured in front and back To side and each locking position substantially uniform with the terminal 96a of slit 96.2nd assists slit 98 under vehicle loading state, In a manner of extending from through hole 94a (insertion center C3) to upper and lower two sides, substantially configure along the vertical direction.In addition, about Slit the 97, the 2nd is assisted to assist slit 98, in order to prevent the misassembly of retainer 55, be preferably formed in makes to engage with from terminal 96a Locking 96 separation side of slit of 74 protrusion of protrusion is formed in centered on being inserted into center C3 if be described in detail And symmetrical opposite side (front side when vehicle loading, the region of 180 ° of separation).
Moreover, each locking slit 96, auxiliary slit the 97, the 2nd assist the position between slit 98 in inserting opening 94 When the main part 41 in inflator 40 is inserted into respectively, it is configured to fold into a manner of contacting by the outer peripheral surface 41c with main part 41, Constitute the bending sealing position 100 for covering the outer peripheral surface 41c of main part 41.In the case where embodiment, as shown in figure 19, Form 5 pieces of bending sealing positions 100A, 100B, 100C, 100D, 100E.Each bending sealing position 100 becomes following manner, that is, Outer shape is set as roughly triangular shape, it is respectively when main part 41 is inserted into, adjacent terminal 96a, 97a, 98a is mutual The straight line of connection is folded into as starting point.In addition, if be described in detail, in embodiments, by auxiliary slit 97 And the 2nd auxiliary slit 98,98 between region constitute (in other words, in vehicle loading, before being configured at compared with being inserted into center C3 The region of side) bending sealing position 100D, 100E inflator 40 insertion before retainer 55 be inserted into when, with retainer 55 In maintaining part 56 front side region (from bottom wall part 57 to upper wall portions 65, lower wall portion 66 front side until region) periphery The mode of face contact is folded into inwardly (referring to Figure 24).
Baffle component 110 is configured to cover inserting opening 94 in the inner circumferential side of air bag main body 91 as shown in Figure 19,20 Lid, and tripartite and gas other than the left border 110c side of the front end side of the direction of insertion by outer peripheral edge in addition to becoming inflator 40 The car body side sidewall portion 91a of capsule main body 91 combines.Specifically, baffle component 110 is by the shape of flatly deployment balloon main body 91 Outer shape under state is configured to, and leading edge 110a and rear 110b is set as substantially in left-right direction linear, by left border 110c is set as substantially along the longitudinal direction linear, and the outer shape of the side right border 110d is set as substantially semicircular arc-shaped.And And the baffle component 110 becomes the left border 110c and the insertion center C3 of mounting hole 93 and inserting opening 94 of free end and (passes through Through-hole 94a) between center compare and be located at left (93 side of mounting hole), and make from leading edge 110a the rear that arrives via right border 110d Until 110b and binding site 111 (suture site) being continuously formed in conjunction with car body sidewall portion 91a, will insertion with opening The tripartite other than left of mouth 94 surrounds, and is installed on car body sidewall portion 91a.Make baffle component 110 and car body sidewall portion 91a In conjunction with binding site 111 be formed as be more than inserting opening 94 and extend to the left.In addition, the baffle component 110 will protected In the state that holder 55 is configured in air bag main body 91, it is configured to cover the peripheral side of the maintaining part 56 in retainer 55, When vehicle loading, in the rear side of maintaining part 56, it is configured to the crimping opening portion 72 for being located at left border 110c in retainer 55 Region in (referring to Figure 26).Moreover, the baffle component 110 receives the expansion gas internally flowed into when air bag 90 expands The pressing force of body G is pressed into crimping opening portion 72, is crimped with the outer peripheral surface 41c of the main part 41 of inflator 40 (referring to figure 26,27).Therefore, the left border 110c of baffle component 110 is consumingly crimped with the outer peripheral surface 41c of main part 41, can prevent from coming from The gas of inserting opening 94 leaks.
Separating up and down in the frenulum 120,121 that the inside of air bag main body 91 configures, is being respectively configured as substantially along right and left To.The frenulum 120,121 is configured in order to which thickness when completing to expansion is limited, and the frenulum 121 of downside is configured to Mounting portion 92 and protection bulge 102 are divided, the frenulum 120 of upside is configured to up and down to protection bulge 102 Region is divided.Each frenulum 120,121 be formed with can make expansion gas circulate multiple gas communication hole 120a, 121a。
In the case where embodiment, air bag 90 is to cut the substrate being made of textile cloths such as polyester line, polyamide threads To provide shape, is sewed up using suture, be formed as bag-shaped.Air bag 90 is in the case where embodiment, such as Figure 21,22 institutes Show, is made of following part：3 block main bodies base fabric 125,126,127, constitute air bag main body 91 car body sidewall portion 91a and Occupant's sidewall portion 91b；2 pieces of frenulums base fabric 129,130；Baffle component 110；And reinforce cloth 132.
Main body with base fabric 125,126 respectively in car body sidewall portion 91a, occupant's sidewall portion 91b, constitute from mounting portion 92 to Until the configuring area of the frenulum 120 of upside (region being below compared with frenulum 120).Main body with base fabric 127 constitute with Frenulum 120 compares car body sidewall portion 91a and occupant's sidewall portion 91b in top.Each frenulum distinguishes doubling with base fabric 129,130 And constitute frenulum 120,121.Reinforce cloth 132 to be used to reinforce the region until from mounting hole 93 to inserting opening 94, In the periphery of mounting hole 93, the periphery of inserting opening 94, it is stitch-bonded to car body sidewall portion 91a.
In the following, the carrying to the airbag apparatus S of embodiment to vehicle is illustrated.Firstly, so that bolt 85 is from installation The mode that hole 93 is protruded, retainer 55 is contained in air bag 90 from inserting opening 94.Moreover, making the holding in retainer 55 The locking claw 74,74 that portion 56 is formed is convex near the terminal 96a from the locking in inserting opening 94 with slit 96,96 respectively Out.At this point, being sealed in inserting opening 94 by the bending that auxiliary slit 97 and the 2nd assists the region between slit 98 to constitute 100D, 100E are as shown in figure 24 at position, by the region of the front side of the maintaining part 56 of retainer 55 (from bottom wall part 57 to upper wall portions 65, the region until the front side of lower wall portion 66) outer peripheral surface covering mode fold into inwardly, inserting opening 94 is so that vehicle The mode of the region openings of front side when carrying configures (referring to Figure 23).Moreover, maintaining using from locking for each locking claw 74 In the state of the protruding state of slit 96, air bag 90 is folded in the mode that can be contained in shell 28, by preventing The packaging material (not shown) of folded deformation being broken surrounds surrounding.At this point, bolt 85, composition inserting opening 94 Position around slit 95 is exposed from packaging material.
Next, making the main part 41 of inflator 40 via inserting opening 94, gas is inserted into from 42 side of gas blowing unit In capsule 90 (in the maintaining part 56 of retainer 55), until making the left border of the bolt 45 and peripheral part 80 that protrude from main part 41 Until 80a is abutted, it is inserted into the recess portion main body 79 of the accommodating recess 78 of retainer 55.At this point, in inserting opening 94, by Bending sealing position 100A, 100B, 100C that region between locking slit 96 and auxiliary slit 98 is constituted are respectively present in Between main part 41 and the maintaining part 56 of retainer 55, and internally folds into and the outer peripheral surface 41c of main part 41 is covered into (reference Figure 25).In addition, flexible deformation support portion 58 of the main part 41 of inflator 40 in the state of by bending rake 58a Support portion main body 58b, abutting part 69 each support protrusion portion 70,70 front end 70a, 70a to side in the axial direction and the orthogonal side of axis In the state that movement to side is limited, keeps and (temporarily holding) in maintaining part 56.Then, to make bolt from bottom wall part 29 45, the mode of 85 protrusions, is contained in the air bag 90 folded and inflator 40 in shell 28, is anchored on nut 86 from bottom wall part Air bag 90 and inflator 40, are installed on the bottom wall part 29 of the shell 28 as vehicle body side part by the bolt 45,85 of 29 protrusions.This When, deform ora terminalis 82b, 82b of front end 82a in the pressure contact portion 82 that retainer 55 is formed, and keep front end 82a big circumferentially The outer peripheral surface 41c of the range and the front side (57 side of bottom wall part) in the main part 41 of inflator 40 that cause whole region is continuously supported It connects, to be crimped on outer peripheral surface 41c.Moreover, the main part 41 of inflator 40 near bolt 45 by bolt 45, configure The pressure contact portion 82 and the offset relative to retainer 55 is limited, be mounted on bottom wall part 29 securely.
Then, if in a manner of engaging each engagement pawl 32a, 33a and stop hole 21a, 22a periphery, by air cell covering 16 It is assembled in shell 28, then air bag equipment can be assembled.It is fixed moreover, being installed air bag equipment using bracket 4,4 In 1 side of vehicle body, make to have carried out the lead 48 extended from air bag operating circuit the connector 47 of wiring with from the connection of shell 28 Device is connected with the connection oral area 43 of the main part 41 of the opening 35R inflator 40 exposed.Then, if covered to instrument board 12, bottom 13 (referring to Fig.1,2) are installed, then airbag apparatus S can be made to be equipped on vehicle.
In airbag apparatus S to after vehicle loading, if via lead 48 to 41 input service signal of main part, from inflation Gas vent 42a in the main part 41 of machine 40 sprays expansion with gas, and expansion gas is via the guarantor in retainer 55 The gas outflow for holding the formation of portion 56 is flowed into air bag 90 with opening 56b, 56c.Moreover, air bag 90 is because internally flowing into expansion It is expanded with gas, is broken packaging material (not shown), and press the door portion 18 of air cell covering 16, door portion 18 makes week The fracture reservations 19 enclosed are broken, and with hinge part 20 is rotation center and is opened to upper and lower.Moreover, air bag main body 91 is from shell 28 protrusion is protruded with opening 28a towards vehicle rear side, as Fig. 1,4 double dot dash line shown in, complete expansion.
Moreover, being inserted into the guarantor of retainer 55 in the main part 41 for making inflator 40 in the airbag apparatus S of embodiment When holding in portion 56, by bending flexible deformation support portion 58, so as to be smoothly inserted into the main part 41 of inflator 40 To maintaining part 56, in addition, flexible deformation support portion 58 maintains the state of flexure, and and inflator after the insertion of main part 41 The outer peripheral surface 41c of main part 41 in 40 is abutted.In addition, will be rigidly set to than flexible deformation support portion 58 in maintaining part 56 Height is also formed with the support protrusion portion 70 abutted with the outer peripheral surface 41c of main part 41, therefore inserts in main part 41 to maintaining part 56 After entering, pass through the support portion main body 58b and support protrusion of the flexible deformation support portion 58 abutted of the outer peripheral surface 41c with main part 41 The front end 70a in portion 70, can be in the main part 41 of the specified position reliably support and inflation machine 40 of the inner circumferential side of maintaining part 56.
Therefore, in the airbag apparatus S of embodiment, the main part 41 of inflator 40 can be made to be smoothly inserted into holding In portion 56, and the main part 41 of inflator 40 by maintaining part 56, can be made to configure and reliably kept in specified position.
In addition, flexible deformation support portion 58L, 58R, support protrusion portion 70 (abut in the airbag apparatus S of embodiment Portion 69L, 69R) it is both formed in along 2 axial positions of inflator 40 (main part 41), therefore can be by the master of inflator 40 Body portion 41 is steadily supported at 2 positions that axial side separates, be able to suppress make the central axis X1 of inflator 40 relative to The central axis X2 of maintaining part 56 is tilted, and can be kept by maintaining part 56.In addition, if not considering side as described above Face is then configured to for being staggered the position of axial side, respectively only in 1 position configuration flexible deformation support portion and support protrusion Portion's (abutting part).In addition, in embodiments, being arranged respectively at flexible deformation support portion and support protrusion portion (abutting part) 2 positions, but be also configured to make only one configuration in flexible deformation support portion or support protrusion portion at 2 positions, make Another one configures at 1 position.
Also, in the airbag apparatus S of embodiment, it is configured to 1 flexible deformation support portion, 58,2 support protrusion portions 70,70 inflator 40 (main part 41) peripheral side at general radial, therefore 58 He of flexible deformation support portion can be passed through Support protrusion portion 70,70 is substantially uniformly supported the outer peripheral surface 41c of main part 41 in substantially radial position, When the main part 41 of inflator 40 is inserted into, it can easily make the axle center of the axle center C1 of main part 41 and maintaining part 56 (to filling The insertion center C2 at center and inserting opening 56d that mechanism of qi 40 is kept is substantially uniform) it is consistent.In addition, if not considering Aspect as described above, then be configured to keep flexible deformation support portion and support protrusion opposite in axis orthogonal direction side respectively Position respectively configures 1.
Also, in the airbag apparatus S of embodiment, it is configured to make flexible deformation support portion 58 and support protrusion portion 70 (abutting part 69) is substantially uniform in the position of the axial side of inflator 40 (main part 41) and configures, therefore along inflator 40 An axial position, by the flexible deformation support portion 58 configured at 3 positions circumferentially and support protrusion portion 70, with 3 Point-supported mode is supported the outer peripheral surface 41c of inflator 40 (main part 41), can more stably keep inflator 40 Main part 41.In addition, if not considering aspect as described above, then it is configured to not make flexible deformation support portion and support Lug boss the axial side of inflator position consistency, and be configured at inflator axial side separation position.
Also, in the airbag apparatus S of embodiment, flexible deformation support portion 58 is by that will constitute the bottom of maintaining part 56 The inside line 57b of wall portion 57 a part cutting bending and formed, therefore retainer 55 manufacture when, also can be simultaneously Flexible deformation support portion 58 is formed, the increase of components number can also be inhibited, and the increase of manufacturing cost is pressed down System.In addition, if do not consider aspect as described above, then it can be by flexible deformation support portion by the elastic portion seperated with maintaining part Part is constituted.Moreover, in embodiments, being bent to form around portion 60 in the cutting for constituting flexible deformation support portion 58 and forming bullet Property deformable supports portion 58 after formed opening position 61, the covering portion formed by the outside left 57a for constituting bottom wall part 57 Part 62 covers, and is the structure of occlusion, therefore is able to suppress the expansion gas sprayed from inflator 40 from flexible deformation support portion The flows outside of position around 58 to retainer 55.Therefore, even if as embodiment, make flexible deformation support portion 58 It is configured at the bottom wall part 57 in the maintaining part 56 of 29 side of bottom wall part of shell 28 configuration, is also reliably prevented from from inflator 40 The expansion of ejection is contacted with gas with the car body sidewall portion 91a for the air bag 90 being present between bottom wall part 29,57.
In the airbag apparatus S of embodiment, be configured to using from the protrusion setting of retainer 55 bolt 85, from inflator Air bag 90 and inflator 40, are installed on the bottom wall part 29 of shell 28, from inflation by the bolt 45 of the 40 protrusion setting of main part 41 The bolt 45 of the protrusion setting of main part 41 of machine 40 is inserted into when main part 41 is inserted into maintaining part 56 in the formation of retainer 55 Accommodating recess 78, thus make the bolt 85 of retainer 55 identical with protrusion direction.In the accommodating recess 73, it is inserted into bolt 45 Recess portion main body 79 become direction of insertion base portion side right end side have opening 79a, as slot substantially in left-right direction Shape and constitute.But in the airbag apparatus S of embodiment, the main part 41 of inflator 40 is only inserted into maintaining part 56, is led to It crosses flexible deformation support portion 58 and support protrusion portion 70 (abutting part 69) limits the movement along axially direction side, by protecting It holds portion 56 to temporarily hold, so if being inserted into the main part 41 of inflator 40 in maintaining part 56, main part 41 is configured at Specified position (if abutting bolt 45 with the left border 80a in the peripheral part 80 of recess portion main body 79), is able to suppress bolt 45 move in recess portion main body 79, also can be easily implemented positioning of the bolt 45 relative to the bolt 85 of retainer 55.Therefore, Even the main part 41 of retainer 55 and inflator 40 respectively configuration a piece bolt 45,85 structure, can also make bolt 45, The mutual separation distance constant of 85 protrusion direction, bolt 45,85, can be such that bolt 45,85 is smoothly inserted into simultaneously Insertion hole 29a, the 29b formed to the bottom wall part 29 in shell 28, the installation exercise to the bottom wall part 29 of shell 28 are also good.
In addition, in embodiments, use the airbag apparatus S of knee protection as an example and be illustrated, but It can be not limited to air bag device for knee protection using airbag apparatus of the invention, for example, taking in the backrest portion at seat The side air bag device of load also can be using the present invention.
In addition, being configured to retainer 55 and inflator 40 in the airbag apparatus S of embodiment and respectively configuring 1 bolt 45,85, each bolt 45,85 is installed on to the bottom wall part 29 (vehicle body side part) of shell 28.But do not make bolt from inflator Protrusion setting, 2 positions of the axial side along inflator in retainer are configured to be installed on the bolt of vehicle body side part Structure airbag apparatus in, also can using the present invention.

Claims (7)

1. a kind of airbag apparatus, consisting of has：
Air bag；Inflator supplies expansion gas to the air bag；And retainer, it is used for the inflator and the gas Capsule is installed on vehicle body side part,
The inflator is that outer shape is set as to generally cylindrical cylinder type,
The retainer is configured to have：The substantially maintaining part of tubular, can by the peripheral side of the inflator cover and into Row is kept；And installation unit, from the maintaining part to protrude setting, institute with the approximately axially orthogonal mode of the inflator It states retainer to be configured to, in the state of making the inflator be held in the maintaining part, the installation unit is installed on institute Vehicle body side part is stated, the inflator and the air bag are thus installed on the vehicle body side part,
The maintaining part has in inner circumferential side：Flexible deformation support portion, the inflator insertion when carry out flexible deformation and It can be abutted with the outer peripheral surface of the inflator；And support protrusion portion, rigidity be set to it is higher than the flexible deformation support portion, It is abutted with the outer peripheral surface of the inflator,
The flexible deformation support portion and the support protrusion portion are configured at can be in the inner circumferential side of the maintaining part to being inserted into The position that the inflator of the maintaining part is supported.
2. airbag apparatus according to claim 1, wherein
At least one of the flexible deformation support portion or the support protrusion portion are formed in the axial direction along the inflator 2 positions.
3. airbag apparatus according to claim 2, wherein
The flexible deformation support portion and the support protrusion portion are formed in the peripheral side in the inflator in substantially putting together Penetrate 3 positions of shape.
4. airbag apparatus according to claim 3, wherein
The flexible deformation support portion and the support protrusion portion are substantially uniform in the position of the axial side of the inflator and match It sets.
5. airbag apparatus according to claim 1, wherein
Both the flexible deformation support portion or the support protrusion portion are formed in along 2 axial portions of the inflator Position.
6. airbag apparatus according to claim 1, wherein
The maintaining part is constituted as metal plate system,
The flexible deformation support portion is the formation by a part cutting bending of the maintaining part.
7. airbag apparatus according to claim 6, wherein
There is the maintaining part cutting for constituting the flexible deformation support portion to be bent to form portion, and be bent to form the cutting The opening position around the flexible deformation support portion after the formation flexible deformation support portion in portion occludes and constitutes.
CN201810278775.3A 2017-03-30 2018-03-30 Airbag device Active CN108819896B (en)

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US10780858B2 (en) 2020-09-22
CN108819896B (en) 2021-10-12
JP2018167794A (en) 2018-11-01
DE102018106924A1 (en) 2018-10-04
JP6760181B2 (en) 2020-09-23
US20180281734A1 (en) 2018-10-04

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